KR950006405B1 - Step-actuactor of vain type - Google Patents

Abstract

The multistepped actuator generates equal power as the first step actuator and makes multistepped vibration movements. It comprises: I) an upper and a lower actuators fixed on the vane shafts (38,39) of the bodies (35,36) fixed on the casing (34). The 1st vane shaft (38) and bodies (41,42) are connected by means of a connecting plate (44) to result in associated actuation of the upper and the lower actuators.

Description

Vane Stepped Actuators

1 is a longitudinal sectional and bottom view of a conventional vane step-actuator.

2 is a sectional view taken along the line A-A of FIG.

3 is an exploded perspective view of the stopper separated from the body.

4a-d are operational states.

5 is a perspective view showing a state of use of a conventional vane step-actuator.

6 is a longitudinal sectional view showing the vane step-actuator of the present invention.

7 is a cross-sectional view taken along line B-B in FIG.

8 is a cross-sectional view taken along the line C-C of FIG.

9a-d are operational states.

* Explanation of symbols for main parts of the drawings

34: casing 35, 36, 41, 42: body

38: first vane shaft 39: second vane shaft

40: first vane 43: second vane

44: connecting plate 45: pin

47: shoe

The present invention relates to a vane-type step-actuator (Step-Actuator) that rotates the drive shaft in a predetermined angle in multiple stages, and more specifically, to make the swing motion in multiple stages while generating the same output as the one-step actuator having the same size. It is.

In general, the pneumatic actuator is a device that converts the energy of the compressed air into mechanical energy by using the air pressure as a driving source, and the mechanical motion is classified into three types: linear reciprocating motion, rocking motion, and rotational motion.

Looking at the structure of the conventional vane-type step-actuator to perform a double rocking motion in accordance with the accompanying drawings 1 to 3 as follows.

The conventional vane step-actuator is composed of an inner actuator and an outer actuator.

The inner actuator is a body (1) (2) having the axial function of the outer actuator at the same time, and the vane shaft (3) guided by the body to convert the air pressure into mechanical energy (Energy) to transmit the output to the outside, the A vane (4) fixed to the vane shaft and swinging at a predetermined angle according to the air pressure, and a shoe (5) mounted inside the vane and acting as a stopper to allow the vane shaft (3) to swing within a certain angle range (5). When the vane shaft (3) oscillates, the seal (6) to prevent internal leakage and the O-ring (7) to prevent external leakage, the bearing to support the vane shaft (3) and smooth the oscillation movement ( 8) (9), the cover plate (10) (11) for preventing foreign matter from entering the body, the outside of the body (1) (2) to adjust the swing angle of the vane shaft (3) It is comprised by the arm 12 and the stopper 13 and 14 which were provided.

On the other hand, the outer actuator is a body (16) and (17) for supporting and guiding the vane (15), which moves separately from the body (1) (2) and the vane shaft (3) of the inner actuator and enables the step movement, A shoe 18 for limiting the swing angle of the vane to a certain range, a vane seal 19 and a shoe seal 20 to prevent internal leakage during the swinging movement of the vane, and an O-ring 21 to prevent external leakage. (22), an arm (25) fixed to the cover plates (23) and (24) and the body (16) and (17) to prevent foreign matter from entering the body (16) and (17) to adjust the swing angle of the outer actuator (25). ) And stoppers 26 and 27.

In the figure, reference numeral 1A.1B.2B.2B is a port for absorbing and exhaling air pressure.

The conventional step-actuator configured as described above should initially set the positions of the stoppers 13 and 26 in order to swing the vane shaft 3 at an angle as necessary.

To this end, as shown in FIG. 3, the stopper 26 on one side is separated from the body 17, and then the stopper 26 is bolted to the hole 17a formed in the body 17 according to a desired swing angle. It is possible to adjust the swing angle by fixing with).

When using such a step-actuator to supply the parts 29 mounted on the turntable 28 and supplied in a plurality of lines as shown in FIG. 5, the ports 1A and 1B formed in the body ( The air having a predetermined pressure may be selectively supplied through 2A) and 2B.

4A shows the origin (0 °) setting state. When air having a constant pressure is supplied to the ports 1B and 2B, the vanes 4 of the inner actuator and the vanes 15 of the outer actuator are driven by air pressure. The vane shaft 3 stops by rotating to the stopper 13 and 26 positions.

That is, it becomes like the solid line of FIG.

In this state, as the cylinder 30 operates to absorb one component 29 and then ascends, as shown in FIG. 4B to supply the component 29 to the first line 31 by a control unit (not shown). Similarly, if air of constant pressure is supplied to the ports 1B and 2A (the ports 1A and 2B are exhausted), the vanes 4 of the inner actuator are fixed by the shoe 5, and the vanes of the outer actuator ( Only 15) rotates by 90 ° counterclockwise to stop by the angle set by the stopper 27.

Accordingly, the vane 15 and the fixed shoe 5 are rotated by 90 ° with the vane 4 fixed to the vane shaft 3 so that the adsorbed component 29 can be transferred to the first line 31. do. The angle of rotation of the vane 15 of the outer actuator is then adjustable by the stoppers 26 and 27 in the range of 90-180 °.

After supplying the component 29 to the first line 31, the return is then possible by supplying air pressure to the ports 1B and 2B as in the initial setting.

On the other hand, when the component 29 is to be supplied to the second line 32, air pressure is supplied to the ports 1A and 2B as shown in FIG. 4C. Accordingly, the vane 15 of the outer actuator is supplied to the supporter 26. The vane 4 of the inner actuator is rotated 180 ° by air pressure and connected to the stopper 14 to stop the rotation, so that the component 29 can be supplied to the second line 32. do.

At this time, the angle of rotation of the vane 4 of the inner actuator is adjusted within the range of 180 ° by the stoppers 13 and 14.

In addition, when the component 29 is to be supplied to the third line 33, that is, when the vane side 3 is to be rotated 270 °, the air pressure may be supplied to the ports 1A and 2A as shown in FIG. 4D. .

Accordingly, the vane 4 of the inner actuator rotates 180 ° while the vane 15 of the outer actuator rotates 90 ° counterclockwise to rotate the vane 15 and the fixed shoe 5 by 90 ° so that the stopper 14 rotates 180 °. Since the rotation is stopped by the vane 4 of the inner actuator, the vane 4 of the inner actuator is rotated 270 ° clockwise, and the vane shaft 3 is also stopped by rotating 270 ° clockwise. 33) can be supplied.

Thereafter, the return is made possible by supplying air pressure to the ports 1B and 2B as shown in FIG. 4A.

The operation as described above is made possible by selectively supplying air pressure to each port.

However, the outer actuator of such a conventional step-actuator serves to adjust only the step of the vane shaft 3 and the output is ultimately determined by the rotational force of the vane shaft 3 and the rotational force is proportional to the cross-sectional area acting on the vane. Because the output is reduced to 1/8 level compared to the one step-actuator with the same size of the outer shape, there is a problem that the appearance is excessively large as well as the manufacturing cost is increased to apply to the multi-stage fluctuation movement of high power.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem in the related art, and an object thereof is to generate an output comparable to that of a one-step actuator of the same size and to further widen the range of the swing angle.

According to an aspect of the present invention for achieving the above object, a lower actuator comprising a body fixed to the casing, and a first vane installed in the body and externally fixed to the first vane shaft, the first vane shaft fixed to the second vane shaft, Consists of a pair of bodies installed inside the actuator and the second vane shaft and the second vane fixed to the second vane and the second vane fixed to the body and the first vane shaft by connecting the body and the connecting means to the first actuator As the vane shaft is rotated, a vane step-actuator is provided such that the second vane shaft is further rotated by the rotation angle of the first vane shaft.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 6 to 8 of the accompanying drawings.

6 is a longitudinal cross-sectional view showing the vane step-actuator of the present invention, and FIGS. 7 and 8 are cross-sectional views taken along line B-B and line C-C of FIG.

In the present invention, the body 35 and 36 are fixed to the casing 34 by bolts 37 to form an enclosure, and the first vane shaft is extrapolated to the second vane shaft 39 in the bodies 35 and 36. 38 is fixed, and the first vane 40 is fixed to the first vane shaft 38 to form a lower actuator.

On the other hand, the casing 34 is provided with bodies 41 and 42 which are connected together with the first vane shaft 38 by connecting means and rotate together, and second vanes within the bodies 41 and 42. Reference numeral 43 is fixed to the second vane shaft 39 to constitute the upper actuator.

The connecting means for connecting the first vane shaft 38 and the body 42 has a connecting plate 44 installed between the lower actuator and the upper actuator, the upper portion is fixed to the body 42 and the pin 45. The lower part is fixed by the first vane shaft 38 and the fixing means so that the bodies 41 and 42 rotate together as the first vane shaft 38 rotates.

In one embodiment of the present invention as the fixing means to use the key 46, but is not necessarily limited to this may be changed in various forms, such as spline (spline) or interference fit.

The plurality of shoes 47 are fixed at equal intervals in the bodies 35 and 36 constituting the lower actuator, and the plurality of first vanes 40 are positioned between the shoes 47 on the first vane shaft 38. In the case of fixing), the output of the lower actuator can be improved n times (n: number of first vanes) than the output of the upper actuator. Therefore, when the same output is produced, the height of the lower actuator can be reduced. In an embodiment of the present invention, as shown in FIG. 8, the shoe 47 is installed at an interval of 180 °, and the first vane 40 is disposed at an angle of 180 ° so that the first vane shaft 38 is positioned between the shoes 47. ) Is fixed.

That is, when the two first vanes 40 are fixed to the first vane shaft 38, the height of the lower actuator can be reduced to 1/2 of the height of the upper actuator.

In the drawing, reference numeral 48 is an upper part. Shoe fixed to the body 41, 42 of the actuator, 49 is a bearing for supporting the second vane shaft, 50 is an oilless bearing installed between the first vane shaft and the second vane shaft, 51 is for maintaining airtightness O-rings 52A, 52B, 53A, 53B and 54B are ports for supplying air at a constant pressure.

Referring to the effects of the present invention configured as described above are as follows.

9a-d is an operating state diagram of the present invention. FIG. A is a view illustrating a state in which the second vane shaft 39, that is, the origin (0 °) of the output shaft, is set. The ports 52A, 53A, 54A are shown in FIG. When the air is supplied at a constant pressure, the first and second vane shafts 38 and 39 are rotated to a position set by an external stopper (the structure is the same as a conventional step-actuator, and thus omitted).

In this state, the second vane shaft 39 is rotated at a predetermined angle ( When the air pressure is supplied to the ports 52A, 52B, and 54B (the exhaust of the ports 52B, 53A, and 54A) to oscillate, the second vane 43 is the shoe ( The first vane 40 is rotated while the first vane 40 is rotated clockwise by the air pressure supplied to the ports 53B and 54B while maintaining the state of connection with the 48.

Accordingly, since the rotational force is transmitted to the bodies 41 and 42 through the first vane shaft 38 and the connecting plate 44 fixed thereto, the shoe 48 fixed to the bodies 41 and 42 is the output shaft. 2 vane shaft (39) in a clockwise °) rotated.

At this time, the swing angle of the first vane shaft 38 ( °) is adjustable within the range of 120 ° by varying the position of the stopper (not shown) in the same manner as the conventional step-actuator. In addition, since the lower actuator is provided with two first vanes 40, the output of the upper actuator can be twice as large as that of the upper actuator having one vane, so that the height of the lower actuator can be reduced to 1/2 of the upper actuator.

On the other hand, the reduction of the first vane shaft 38 and the second vane shaft 39 is possible by supplying air pressure to the ports 52A, 53A, 54A as shown in FIG. 9A.

In addition, when the second vane shaft 39 is to be rotated about intermediate degrees ( β °), air pressure may be supplied to the ports 52B, 53A, and 54A as illustrated in FIG. 9C. Accordingly, the first vane 40 is The first vane shaft 38 is stopped and the second vane shaft 39, which is the output shaft, is rotated by a predetermined angle ( β °) in a clockwise direction by the air pressure supplied through the port 52B. Is stopped.

At this time, the swing angle ( beta ) of the second vane shaft 39 is adjustable within the range of 280 °. In addition, when the second vane shaft 39 is to be swinged at the maximum angle, air pressure may be supplied to the ports 52B, 53B, and 54B as shown in FIG. 9D. 40, the first vane shaft 38 is a certain angle ( °) Since the second vane shaft 39 also rotates clockwise At the same time as the second vane shaft 39 is rotated β ° by the air pressure supplied to the port 52B at the same time, the second vane shaft 39 as the output shaft is eventually ° + is stopped and rotated by β °.

During operation as described above It is to be understood that the swing angle of the second vane shaft 39 can be varied by appropriately adjusting the position of the supporter within the range of ° and β °.

As described above, the lower actuator and the upper actuator are installed in series so that the second vane shaft 39, which is the output shaft, can be swung in multiple stages, so that an output almost equal to that of the one-step actuator can be obtained, as well as the lower actuator. By installing two first vanes 40 therein, the output is twice as large as that of the upper actuator, thereby reducing the height of the lower actuator to 1/2 of the height of the upper actuator, thereby making the device compact.

In addition, the lower actuator can be oscillated in a range of up to 120 ° and the upper actuator up to 280 °, thereby having an effect that can be applied to more various applications.

Claims (3)

Lower actuator comprising a body 35 and 36 fixed to the casing 34 and a first vane 40 installed in the body and fixed to the first vane shaft 38 extrapolated to the second vane shaft 39. And an upper actuator including a pair of bodies 41 and 42 installed inside the casing 34 and a second vane shaft 43 fixed to the second vane shaft 39. And the first vane shaft (38) and the body (41) (42) by connecting the connecting plate 44, the upper and lower actuators, characterized in that the vane step-actuator. According to claim 1, One side of the connecting plate 44 installed between the lower actuator and the upper actuator is fixed to the body 42 and the pin 45 and the other side is fixed to the first vane shaft 38 to the first A vane step-actuator characterized in that the bodies (41) (42) are rotated together as the vane shaft (38) is rotated. 2. The plurality of first vanes of claim 1, wherein the plurality of shoes 47 are fixed at equal intervals in the bodies 35 and 36 constituting the lower actuator, and the first vane shaft 38 is positioned between the shoes. A vane step-actuator, characterized in that 40 is fixed.